at combobox popup Scrollbar, mouse down. while ms Down .. move mouse outside of scrollbar are now mouse up... when you move mouse up down inside bound of open scroll happens.. the problem is: scrollbar has not received mouse up (if its msUpped outside of scrollBar Area).. https://github.com/user-attachments/assets/45b0296e-a518-4e33-9e78-9d91309ace07